Overview
The HMC674LP3ETR is a silicon germanium (SiGe) monolithic ultrafast comparator produced by Analog Devices Inc. This device is designed for high-speed applications, featuring reduced swing positive emitter-coupled logic (RSPECL) output drivers and latch inputs. It supports 10 Gbps operation, making it suitable for a wide range of applications from Automated Test Equipment (ATE) to broadband communications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Propagation Delay | tPDH, tPDL | - | 85 ps | - | - | Input overdrive voltage (VOD) = 200 mV |
| Input Signal Minimum Pulse Width | tPL | - | 60 ps | - | - | VOD = 200 mV |
| Random Jitter (RJ) | - | - | 0.2 ps rms | - | - | - |
| Overdrive and Slew Rate Dispersion | - | - | 10 ps | - | - | - |
| Output Voltage High Level | VOH | 1.03 V | 1.09 V | 1.14 V | V | VCCO = 2.00 V, VTT = 0 V |
| Output Voltage Low Level | VOL | 0.65 V | 0.71 V | 0.81 V | V | VCCO = 2.00 V, VTT = 0 V |
| Differential Swing | - | 440 mV | 760 mV | - | mV | - |
| Power Supply Rejection Ratio (PSRR) | - | - | 38 dB | - | dB | VCCI, VEE |
| Input Impedance (LE/LE) | - | - | 8 kΩ | - | kΩ | Each pin |
Key Features
- Ultrafast propagation delay of 85 ps and minimum input signal pulse width of 60 ps.
- Reduced swing positive emitter-coupled logic (RSPECL) output drivers.
- High-speed latch and programmable hysteresis.
- Operates in either latch mode or tracking comparator mode.
- Supports 10 Gbps operation.
- Low random jitter of 0.2 ps rms.
- Differential swing directly drives 400 mV into a 50 Ω resistor terminated to VTT.
- Input impedance of 8 kΩ for LE and LE inputs, with optional 50 Ω external resistor termination.
Applications
- Automated Test Equipment (ATE).
- Broadband communications.
- High-speed data acquisition systems.
- Telecommunications equipment.
- High-performance computing and networking.
Q & A
- What is the propagation delay of the HMC674LP3ETR?
The propagation delay is typically 85 ps.
- What is the minimum input signal pulse width for the HMC674LP3ETR?
The minimum input signal pulse width is 60 ps.
- What type of output drivers does the HMC674LP3ETR feature?
The HMC674LP3ETR features reduced swing positive emitter-coupled logic (RSPECL) output drivers.
- Can the HMC674LP3ETR operate in both latch and tracking modes?
- What is the random jitter of the HMC674LP3ETR?
The random jitter is 0.2 ps rms.
- What is the differential swing of the HMC674LP3ETR's output?
The differential swing directly drives 400 mV into a 50 Ω resistor terminated to VTT.
- What are the common applications of the HMC674LP3ETR?
- What is the input impedance of the LE and LE inputs?
The input impedance of the LE and LE inputs is 8 kΩ each.
- Can the LE and LE inputs be terminated with external resistors?
- What is the power supply rejection ratio (PSRR) of the HMC674LP3ETR?
The power supply rejection ratio (PSRR) is 38 dB for both VCCI and VEE.
